Too much muscle and any swagger when walking. There is one guy at my gym. Not bad looking. On the verge of too much muscle maybe. But the swagger that goes with his lats and shoulders or whatever is totally off-putting.

The huge muscle guys don't do anything for me. Most of the bigger guys I've known have had lots of fat on them too. I prefer guys that are in great condition along with enough muscle to fill out a T shirt.

Like Kellan Lutz:

Having said that, if I'm in a brawl, I definitely want the big beefy dude on my side

If they have to waddle to walk or wear certain things to keep chafting from occuring then I am totally turned off. Yes too much muscle can be a big turn off for me. Also really veiny people, just looks odd.